Weld lines form when melt fronts converge, as seen with 3-point or spoke gates, creating structural weaknesses. Eliminate them by switching to diaphragm gates for

Short shots primarily stem from thin ribs freezing before the main wall fills, especially when located near the gate. I resolve this by ensuring rib

Eliminate burn marks by reducing injection speed to prevent adiabatic heating and optimizing vent depth to 0.02–0.04 mm for efficient air escape. Lowering melt temperature

Polypropylene is the optimal material for living hinges, requiring a thickness of 0.25–0.50 mm to ensure molecular orientation and fatigue resistance. Eliminate sharp corners and

If a part needs to be assembled and disassembled many times, I recommend using metal threaded inserts. Most inserts should be installed by ultrasonic or

Apply a minimum 1° draft per side for general surfaces, increasing to 2–3° for textured areas to ensure reliable ejection. For deep ribs exceeding five